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Commit f2f64c29 authored by Chengguang Xu's avatar Chengguang Xu Committed by Greg Kroah-Hartman
Browse files

quota: avoid increasing DQST_LOOKUPS when iterating over dirty/inuse list 

[ Upstream commit 05848db2083d4f232e84e385845dcd98d5c511b2 ]

It is meaningless to increase DQST_LOOKUPS number while iterating
over dirty/inuse list, so just avoid it.

Link: https://lore.kernel.org/r/20190926083408.4269-1-cgxu519@zoho.com.cn


Signed-off-by: default avatarChengguang Xu <cgxu519@zoho.com.cn>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
Stable-dep-of: dabc8b207566 ("quota: fix dqput() to follow the guarantees dquot_srcu should provide")
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 1e4f7ce3

fs/quota/dquot.c

+0 −2
Original line number Diff line number Diff line
@@ -595,7 +595,6 @@ int dquot_scan_active(struct super_block *sb, 
		/* Now we have active dquot so we can just increase use count */

		atomic_inc(&dquot->dq_count);

		spin_unlock(&dq_list_lock);

		dqstats_inc(DQST_LOOKUPS);

		dqput(old_dquot);

		old_dquot = dquot;

		/*
@@ -650,7 +649,6 @@ int dquot_writeback_dquots(struct super_block *sb, int type) 
			 * use count */

			dqgrab(dquot);

			spin_unlock(&dq_list_lock);

			dqstats_inc(DQST_LOOKUPS);

			err = sb->dq_op->write_dquot(dquot);

			if (err) {

				/*